Adjustable sieve-holder for threshing-machines



A. R. FADNESS. ADJUSTABLE SIEVE HOLDER FOR THRESHING MACHINES.

APPLICATION FILED JULY 3011920- 3 SHEETS-SHEET 1- INVENTOR Patented July 5 .H. E. Fadne/s 5* ATTORNEY A. R. FADNESS.

ADJUSTABLE SIEVE HOLDER FOR THRESHING MACHINES.

APPLICATION FILED JULY 30. 920' i 2 9 1 5 y m 1d d w m a P 3 SHEETS-SHEET 2- IIIllIl/II WI 11111114 illili V7/ll/ lllja/I INVENTOR ATIORNEY A. R. FADNESS. ADJUSTABLE SIEVE HOLDER FOR THRESHING MACHINES.

APPLICATION FILED JULY 30,1920. 1 383 91 8 Patented July 5, 11.921,

' 3 SHEETS-SHEET 3- INVENTOR ATTORNEY service, and a res I ADOLPH IR. FADNESS, OF VELVA, NORTH DAKOTA.

To all whom it may concern:

Be'it known that I, ADoLrH R. F ADNESS, a citizen of the-United States, residing at Velva, in the county of McHenry and, State of North Dakota, have invented new and useful Improvements in Adjustable Sieve- Holders for Threshing-Machines, of which the following is a specification.

This invention relates to threshing machines, particularly to attachments there for, and has for its object the provision of means associated with the sieves located beneath the lower chaffer whereby the sieves may be adjusted toward or away from the chaffer, depending upon conditions arising in the threshing of different grains.

An important object is the provision of a device of this character which is so constructed that the sieves'may be adjusted from the outside of the machine and even while the machine is inoperation, meansbeing also provided whereby the position of the sieves may be readily ascertained at all times.

Another object is the provision of a device of this character in which the parts will be held firmly in adjusted position.

Anadditional object is the provision of a device of this character which will be simple and inexpensive in manufacture and installation, highly efficient in use, durable in general improvement in, the art. 1 I

W'ith the aboveand other objects and ad-' vantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed and illustrated in the accompanying drawings in Which Figure 1 is a side elevation of a portion of a threshing machine, showing my device in position,

Fig. 2 is a longitudinal sectional view through a portion of the threshing machine and showing one side of my adjusting means in elevation,

Fig. 3 is a similar view showing my device also in section,

Fig. 4 is a horizontal sectional View,

Fig. 5 is a cross sectional view taken through both sides of the thresher,

Fig. 6 is a fragmentary view illustrating a slight modification,

Fig. 7 is a longitudinal sectional view showing another modified form,

Fig. 8 is a cross section therethrough, and

Specification of Letters Patent.

Application filed July 30, 1920. Serial No. 400,052.

ing thereinto.

Patented July 5,1921.

. Fig. 9 is a detail sectional view of a further modification.

' Referring more particularly to the drawings, the letters A and B designate the sides of a portion of a threshingmachine and C designates the sides of the lower chaffer. The letters'D and E designate the sides of the sieves which are pivoted at one end, as shown at F. It is well known that under different conditions arising in the threshing of different grains it is necessary orat least preferable that the positions of the sieves with respect to the chafi'er be varied. It is with this fact in view that the present invention hasbeen designed.

In carrying out my invention I provide a casing 10 secured against the inner faces of the sides A. and B of the threshing machine adjacent the free ends of the sieves D and E. Each casing has its edge toward the sieves formed open and theremainderis closed for the purposev of excluding. dust and chaff. Disposed at the open edge of each casing is a vertically movable bar 11 which bears against the edge of thecasing and which has a reduced portion 12 extend- Each bar 11 is formedwith a plurality of, notches 13 of any. desired number and the free ends of the sieves are engaged within selected pairs. of these notches, depending'uponwhether it is desired to have the uppermost sieve close to or comparatively far from the chafi'er. The edge of the reduced portion 12 of the bar 11 is formedwith rack teeth 14.

In order that the bars 11 may be moved up and down to move the sieves with respect to the chaifer, I providewithin each casing 10, a pinion 15 meshing withthe rack teeth 14. These pinions are secured upon a shaft 16 which extends transversely through the thresher and which is journa-led through the sides thereof.

One end of the shaft 16 projects beyond one side of the thresher and carries a disk 17 and a knob 18 or other suitable handle. The disk 17 has formed in its periphery, a plurality of notches 19. The disk 17 also carries a ridge 20 serving as an indicator.

Located on the side of the thresher outwardly of the disk 17, are'indicating marks 21 adjacent which are located legends indicating the highest, lowest, and intermedlate positions of the sieves and these legends are shown as being Raised, Center and Lowered. Intermediate mark may also be provided. Pivoted side ,thenarms are coniieeted bloclis32 iiotched; thresher is s spring-pressed pawl 22,,hav- L as show n, for hol ding,the sieves. The'bloeks- ,ing a finger 28 adapted toenter ailyv one of 'are' slidable ivithiii'igiiide members 33. In. the notches 191mg} the pztwlis also provided this; formjthe; sheit isset higherfthar thei with a lug 24; by means of which it may shaft in the previously described form, 'The'5 be li te .1. v i PS m Q e r,S t yhes m The opemtion ofthe device i's es followsi the armsBO merely'takingtheipleceof the r The sieves D and Ebeing eng'aged within =ipreviously described'i'ack and pinion move- .selectedpairs 'of'the notches 13, when it is ment.-

I -desired to-bring the si'e'ves relatively close to: Iii Fig. 9 lhaive shovviiithe extensioii 6cthe chaffer,' it is nerely necessary that' th e G disposed entirely above-theicasing l0 "operatofgi'as'p"the lgnob-18and rotateit until sofas to be al'vveys abovej the sieves regardless; the indicating ridge points-toward the of'the edj ustment of theilatteri 'jif mark-21 adjsieerit the le ei1d" Rai sed;" Wh'en From the foregoing descriptioii slid i the kii0bl8'is rotz tedtheshait 16"and pin study of the drawings it willzbe appetrent' ions 15f-vvilljj2t'lsobe 'rOta'ted'eHd theiba 'sfll that'l have'tliusprovided an extremely sim- Will be 'nioved upw'ardly;by'virtiie of the en-. ple "and eflicient device" whereby-threshing V gagement of' tlie teeth 14 with the. pinion'sg machine sieves maybeadj usted With -re'spect 1t iifillfloe seen that he'sieves will thus be to the chatter Without even. necessitating the 5 held comparatively near the 'chaffer Then -stopping of the machine, "the. construction l s the disk iT- i's' ;inoved to thispos'ition, the being such chat the operatormay'tell at a finger'23 oii'the pawl'22 will engage Within glance the positions of the sievesi 1" i one'o'f' the notches 19"midholdthe parts in "NVhile I have" shown alid described the tor disengages position. Whenitj is-des'ired tolovver the preferredembodiment oif mv-iiiventionyit s si've's withr'es'petto the-chatter, the operaof course'tobe understood thatI re's'erve theq7 V the-pawl i'iroiii'theEnotfch 19 rightto r na ke siich chziiigesihthe form, conand turns -;the"ki1ob' '18 until, the ridge 20 struction, and arrangement of psrts as' will POiIltStO the mark adjaeent' the'le'gehd cennot depart fIOIfi tllGSPlIltiOftlIedIiVentlOn* V "terfi Will 'e'siilt'" in rotatioii o'fpthe orthes'cop'e'ofthesUbjOined 'el'aiIi1;;- if 3 shafte ndfpinion and; consequent downward H'avingthus"describedmyinveritiom= I fiib'veii 'entfofthe'barjllfoanyingthesieves. claims-1 V Ifit is'desir'edftolower-the sieve'sf'still Inore, In athreshingmachine;includingsuperthe' knob 1'8is turned; to j bring the ridge.- posed -sleeves',o apair of housings secured 'theieOnf"opposite t :m'ark adjacent the upon the'inner surfaces ofthe j'side ofthe I lege'nfdLOiv'vei'ed. "Ifde'sired, the1"1'ndicatv threshing machine, bars 'slidable vertically iiigl marks be provided in order that the Within saidfhoiisings nd; formed- "vvith a' i degfee'of-adjustment: be iacc irixtely de. series of notches Within selected ones of .In some types "f threshiiig inachines'one joiir'naled'transversely?of the threshing 'ria- "fivhich the sieve-S1 may be "engeged', -e shaft erid of the ch'ziiferfis held ina notch. in the chine and provided with an operating" kiiob V V 'bars'car'rying the sieves :Insuch an event 'exteriorly '-thereof-,-' the doilfrontiiig faces of it is necessary to provide a, separateretainsaid housings being formed vvith vertical ing in'ember25fwi'thinWhichthechaifer is envslots; arms carri'ethby saidshaft, and links gaged so that it'W ill be absolutely independpivo'tall'y connected to 'the'f're'e ends ofsaidrent ofthe sievesi This structure is shown 1n firms-[and pivot lly'con ected'withseid bsrrs, 9s

' F g-", hefi fi f fii 'iilZGXaCt line With said last nai'ne'd' pivotal connections being i r V 1 the'n'otche's 13bit the bar llfl 1 a'ccomiiiodated "Withinisziid slots; T 7 f Referring to the fOIIil'SllQWIl inFigs. 7, and lntestimony whereof -my signature. M 7 8,1 make use of crank arms 30 cer'ri'edby'a i 

